+Thrombin is a crucial [Serine Protease](/wiki/Serine_Protease) enzyme. It acts in [Blood Coagulation](/wiki/Blood_Coagulation), converting fibrinogen into insoluble fibrin, forming the essential mesh of a blood clot.
+## See also
+- [Blood Clot](/wiki/Blood_Clot)
+- [Hemostasis](/wiki/Hemostasis)
+- [Anticoagulant](/wiki/Anticoagulant)
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